Scribbler 3D Printing Pen in the Air for Doodling with Filament, Blue/Yellow/Gray/Orange Create 3D art and objects with ultimate ease and precision Scribbler 3D pen replaces ink with plastic, which melts at a high temperature, which is used to draw in the air or on a surface to create 3D objects You can easily control extrusion speed, temperature and choose the plastic filament Scribbler 3D printing pen is perfect for kids and adults, it comes with 3 loops of plastic filament Scribbler 3D pen weighs just 2.3 Oz, which is huge improvement compared to other brands